Seraphim Solar — China
Sephia-35 BF
The Seraphim Solar Sephia-35 BF is a 355W N-Type TOPCon solar panel with 18.0% efficiency. Backed by a 12-year warranty.
Standard TierFEOC: RestrictedBifacial
355W
Wattage
18%
Efficiency
N-Type TOPCon
Cell Type
12 years
Warranty
Full Specifications
- Brand
- Seraphim Solar
- Model
- Sephia-35 BF
- Series
- Sephia
- Wattage
- 355W
- Module Efficiency
- 18%
- Cell Type
- N-Type TOPCon
- Dimensions
- 65-67" x 39-40"
- Weight
- 40 lbs
- Warranty
- 12 years
- Est. Price Per Watt
- $1.65
- Est. 7kW System Cost
- $11,550
- Est. 10kW System Cost
- $16,500
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- Yes
- Origin
- China
- FEOC Status
- fail
Other Seraphim Solar Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| SRP 455W D | 455W | 21.1% | PERC | $2.58 |
| Sephia 455W D | 455W | 21.1% | PERC | $2.58 |
| SRP 450W C All-Black | 450W | 21% | N-Type TOPCon | $2.55 |
| Sephia 450W C All-Black | 450W | 21% | N-Type TOPCon | $2.55 |
| SRP 440W E Pro | 440W | 20.7% | N-Type TOPCon | $2.46 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| SunPower Maxeon 385-A Black | 385W | 21% | $3.71 |
| SunPower Maxeon 385W D HC | 385W | 21% | $3.71 |
| SunPower Performance 385-A Black | 385W | 21% | $3.71 |
| SunPower Performance 385W D HC | 385W | 21% | $3.71 |
Frequently Asked Questions
How much does a 355W Seraphim Solar Sephia-35 BF cost?
The Seraphim Solar Sephia-35 BF costs approximately $586 per panel ($$1.65/W). A typical 7kW system using this panel would cost around $11,550 before incentives.
⚠ The 30% Federal Solar Tax Credit (48E/ITC) expired July 4, 2026.
Selecting 30% ITC assumes you began construction before this deadline. Most new purchases no longer qualify.Learn about your options after the deadline →
Is the Seraphim Solar Sephia-35 BF a good solar panel?
The Seraphim Solar Sephia-35 BF has 18% efficiency and a 12 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations.
How many Seraphim Solar Sephia-35 BF panels do I need?
For a typical 7kW residential system, you'd need approximately 20 panels. For a 10kW system, plan for about 29 panels. The exact number depends on your roof space, energy usage, and local sun hours.